CN106732591A - A kind of graphene-supported p N-shapeds Cu2O‑TiO2The preparation method of heterojunction nanometer material - Google Patents
A kind of graphene-supported p N-shapeds Cu2O‑TiO2The preparation method of heterojunction nanometer material Download PDFInfo
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- CN106732591A CN106732591A CN201611090700.XA CN201611090700A CN106732591A CN 106732591 A CN106732591 A CN 106732591A CN 201611090700 A CN201611090700 A CN 201611090700A CN 106732591 A CN106732591 A CN 106732591A
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- 239000000463 material Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910001868 water Inorganic materials 0.000 claims abstract description 17
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 229910002804 graphite Inorganic materials 0.000 claims description 16
- 239000010439 graphite Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 12
- 235000019441 ethanol Nutrition 0.000 claims description 10
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 10
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 claims description 8
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 5
- 239000003643 water by type Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 229910052799 carbon Inorganic materials 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 230000007935 neutral effect Effects 0.000 claims 1
- 229910021389 graphene Inorganic materials 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001027 hydrothermal synthesis Methods 0.000 abstract 1
- 239000002114 nanocomposite Substances 0.000 abstract 1
- 238000002604 ultrasonography Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/396—Distribution of the active metal ingredient
- B01J35/397—Egg shell like
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Inert Electrodes (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of graphene-supported p N-shapeds Cu2O‑TiO2The preparation method of heterojunction nanometer material, belongs to nano composite material preparing technical field, disperses graphene in deionized water ultrasound and is configured to solution A, and butyl titanate is dissolved in into absolute ethyl alcohol is made B solution, by Cu (Ac)2·H2O is made C solution in being dissolved in absolute ethyl alcohol, and graphene-supported p N-shapeds Cu is prepared by hydro-thermal method2O‑TiO2Heterojunction nanometer material, preparation method of the present invention is simple, low cost, is conducive to industrialized production, and prepared ternary complex is applied to gas sensing field, and extremely excellent performance is shown in gas sensing.
Description
Technical field
The present invention relates to a kind of preparation method of heterojunction nanometer material, more specifically say, be related to a kind of Graphene to bear
Carry p-n junction Cu2O-TiO2The preparation method of heterojunction nanometer material.
Background technology
The composite that binary metal oxide is supported on graphenic surface simultaneously is repeatedly reported recently.Using inhomogeneity
The performances such as the p-n junction characteristic of semiconductor and the light of its own, electricity, magnetic of type metal oxide, make composite in different applications
Field shows more excellent performance.The material of heterojunction structure is modified on reduced graphene surface, and the composite is in gas
Extremely excellent performance is shown in body sensing, the CuO-ZnO p-n junction structures of formation are served mainly in sensing process
Effect.The research that binary metal oxide is applied to gas sensing is also relatively fewer, finds the excellent p-n junction of sensing capabilities and is combined
Material, and modified in grapheme material be gas sensing field new problem.
At present, because metal oxide has the advantages that non-toxic, low cost, the senser element size of making are small, metal
Application of the oxide-based nanomaterial in gas sensing gets the attention.Research discovery, the compound gold with p-n junction structure
Category oxide has preferable room temperature air sensing capabilities, but in bulk resistor, response and poor performance in terms of resume speed,
A kind of investigation of materials that can obtain preferably sensing effect is the inexorable trend for developing.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided with bulk resistor, response and resume speed
A kind of graphene-supported p-n junction Cu of the excellent grade technical characterstic of aspect2O-TiO2The preparation method of heterojunction nanometer material.
A kind of graphene-supported p-n junction Cu that the present invention is provided2O-TiO2The preparation method of heterojunction nanometer material, it is adopted
Use following steps:
1) by mass fraction, 10-30 parts of deionized water is taken, 5-15 parts of graphite oxide is well mixed, and ultrasonic 0.5-1.5h matches somebody with somebody
Solution A is made, 10-30 parts of absolute ethyl alcohol is taken, 0.2-0.6 parts of butyl titanate mixing is stirred 0.5-1.5h, be configured to B solution, take
10-30 parts of absolute ethyl alcohol, 0.1-0.5 parts of Cu (Ac)2·H2O mixes, and stirs 0.5-1.5h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 10-40min, stir 2-4h, obtain
Mixture;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.1-0.5mol/L until pH value is 1-5, magnetic
Power stirring 2-4h is transferred in the reactor of polytetrafluoroethyllining lining, and 5-15h is incubated under the conditions of 150-200 DEG C, is then centrifuged for water
Washing bakees 18-36h to neutrality under the conditions of 40-80 DEG C, obtains graphene-supported p-n junction Cu2O-TiO2Hetero-junctions nanometer material
Material.
As a kind of preferred, with graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight,
Cu2O、TiO2Account for graphene-supported p-n junction Cu respectively with graphite oxide2O-TiO2The 40- of heterojunction nanometer material gross weight
60%th, 30-50%, 5-15%.
As a kind of preferred, the graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material is applied to gas sensing
Field.
A kind of graphene-supported p-n junction Cu that the present invention is provided2O-TiO2The preparation method of heterojunction nanometer material, it is adopted
Use following steps:
1) by mass fraction, 20 parts of deionized waters are taken, 10 parts of graphite oxides are well mixed, and ultrasonic 1h is configured to solution A,
20 parts of absolute ethyl alcohols are taken, 0.4 part of butyl titanate mixing is stirred 1h, is configured to B solution, takes 20 parts of absolute ethyl alcohols, 0.3 part of Cu
(Ac)2·H2O mixes, and stirs 1h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 25min, stir 3h, mixed
Thing;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.3mol/L until pH value is 3, magnetic agitation
3h is transferred in the reactor of polytetrafluoroethyllining lining, and 10h is incubated under the conditions of 175 DEG C, water washing to neutrality is then centrifuged for, 60
22h is bakeed under the conditions of DEG C, graphene-supported p-n junction Cu is obtained2O-TiO2Heterojunction nanometer material.
As a kind of preferred, with graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight,
Cu2O、TiO2Account for graphene-supported p-n junction Cu respectively with graphite oxide2O-TiO2Heterojunction nanometer material gross weight:50%th,
40%th, 10%, the graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material is applied to gas sensing field.
Profitable effect of the invention:By Cu2O-TiO2The material of heterojunction structure is modified in graphenic surface, with height
Activity, detectable gas;Preparation method is simple, low cost, is conducive to industrialized production;In bulk resistor, response and recovery speed
The aspect excellent performances such as degree;Preparation process green pollution-free, processing safety is high;With preferable room temperature air sensitivities
Can, it is adaptable to gas sensing field.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail:
A kind of graphene-supported p-n junction Cu of the present invention2O-TiO2The preparation method of heterojunction nanometer material, uses
Following steps:
1) by mass fraction, 10-30 parts of deionized water is taken, 5-15 parts of graphite oxide is well mixed, and ultrasonic 0.5-1.5h matches somebody with somebody
Solution A is made, 10-30 parts of absolute ethyl alcohol is taken, 0.2-0.6 parts of butyl titanate mixing is stirred 0.5-1.5h, be configured to B solution, take
10-30 parts of absolute ethyl alcohol, 0.1-0.5 parts of Cu (Ac)2·H2O mixes, and stirs 0.5-1.5h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 10-40min, stir 2-4h, obtain
Mixture;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.1-0.5mol/L until pH value is 1-5, magnetic
Power stirring 2-4h is transferred in the reactor of polytetrafluoroethyllining lining, and 5-15h is incubated under the conditions of 150-200 DEG C, is then centrifuged for water
Washing bakees 18-36h to neutrality under the conditions of 40-80 DEG C, obtains graphene-supported p-n junction Cu2O-TiO2Hetero-junctions nanometer material
Material.
As a kind of preferred embodiment, with graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material gross weight is
Benchmark, Cu2O、TiO2Account for graphene-supported p-n junction Cu respectively with graphite oxide2O-TiO2Heterojunction nanometer material gross weight
40-60%, 30-50%, 5-15%.
As a kind of preferred embodiment, the graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material is applied to
Gas sensing field.
Embodiment 1:A kind of graphene-supported p-n junction Cu of the present invention2O-TiO2The preparation side of heterojunction nanometer material
Method, using following steps:
1) by mass fraction, 10 parts of deionized waters are taken, 5 parts of graphite oxides are well mixed, and ultrasonic 0.5h is configured to solution A,
10 parts of absolute ethyl alcohols are taken, 0.2 part of butyl titanate mixing is stirred 0.5h, is configured to B solution, takes 10 parts of absolute ethyl alcohols, 0.1 part of Cu
(Ac)2·H2O mixes, and stirs 0.5h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 10min, stir 2h, mixed
Thing;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.1mol/L until pH value is 1, magnetic agitation
2h is transferred in the reactor of polytetrafluoroethyllining lining, and 5h is incubated under the conditions of 150 DEG C, water washing to neutrality is then centrifuged for, 40
18h is bakeed under the conditions of DEG C, obtains being applied to the graphene-supported p-n junction Cu in gas sensing field2O-TiO2Hetero-junctions nanometer material
Material, with graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight, Cu2O、TiO2With graphite oxide point
Graphene-supported p-n junction Cu is not accounted for2O-TiO240%, 30%, the 5% of heterojunction nanometer material gross weight.
A kind of graphene-supported p-n junction Cu of embodiment 22O-TiO2The preparation method of heterojunction nanometer material, it is using as follows
Step:
1) by mass fraction, 20 parts of deionized waters are taken, 10 parts of graphite oxides are well mixed, and ultrasonic 1h is configured to solution A,
20 parts of absolute ethyl alcohols are taken, 0.4 part of butyl titanate mixing is stirred 1h, is configured to B solution, takes 20 parts of absolute ethyl alcohols, 0.3 part of Cu
(Ac)2·H2O mixes, and stirs 1h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 25min, stir 3h, mixed
Thing;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.3mol/L until pH value is 3, magnetic agitation
3h is transferred in the reactor of polytetrafluoroethyllining lining, and 10h is incubated under the conditions of 175 DEG C, water washing to neutrality is then centrifuged for, 60
22h is bakeed under the conditions of DEG C, obtains being applied to the graphene-supported p-n junction Cu in gas sensing field2O-TiO2Hetero-junctions nanometer material
Material, with graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight, Cu2O、TiO2With graphite oxide point
Graphene-supported p-n junction Cu is not accounted for2O-TiO2Heterojunction nanometer material gross weight:45%th, 35%, 10%, the Graphene is born
Carry p-n junction Cu2O-TiO2Heterojunction nanometer material.
Embodiment 3:A kind of graphene-supported p-n junction Cu2O-TiO2The preparation method of heterojunction nanometer material, it is using such as
Lower step:
1) by mass fraction, 30 parts of deionized waters are taken, 15 parts of graphite oxides are well mixed, and ultrasonic 1.5h is configured to A molten
Liquid, takes 30 parts of absolute ethyl alcohols, and 0.6 part of butyl titanate mixing is stirred 1.5h, is configured to B solution, takes 30 parts of absolute ethyl alcohols, 0.5 part
Cu(Ac)2·H2O mixes, and stirs 1.5h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 40min, stir 4h, mixed
Thing;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.5mol/L until pH value is 5, magnetic agitation
4h is transferred in the reactor of polytetrafluoroethyllining lining, and 15h is incubated under the conditions of 200 DEG C, water washing to neutrality is then centrifuged for, 80
36h is bakeed under the conditions of DEG C, obtains being applied to the graphene-supported p-n junction Cu in gas sensing field2O-TiO2Hetero-junctions nanometer material
Material, with graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight, Cu2O、TiO2With graphite oxide point
Graphene-supported p-n junction Cu is not accounted for2O-TiO255%, 35%, the 5% of heterojunction nanometer material gross weight.
Embodiment of the present invention is not limited to the above 3 embodiment, by foregoing disclosed number range,
With regard to carrying out any replacement in specific embodiment, such that it is able to obtain numerous embodiment, this is not enumerated.
Claims (5)
1. a kind of graphene-supported p-n junction Cu2O-TiO2The preparation method of heterojunction nanometer material, it is characterised in that the preparation side
Method uses following steps:
1) by mass fraction, 10-30 parts of deionized water is taken, 5-15 parts of graphite oxide is well mixed, and ultrasonic 0.5-1.5h is configured to
Solution A, takes 10-30 parts of absolute ethyl alcohol, and 0.2-0.6 parts of butyl titanate mixing is stirred 0.5-1.5h, be configured to B solution, takes 10-
30 parts of absolute ethyl alcohols, 0.1-0.5 parts of Cu (Ac)2·H2O mixes, and stirs 0.5-1.5h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 10-40min, stir 2-4h, mixed
Thing;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.1-0.5mol/L until pH value is 1-5, magnetic force is stirred
Mix 2-4h to be transferred in the reactor of polytetrafluoroethyllining lining, 5-15h is incubated under the conditions of 150-200 DEG C, be then centrifuged for water washing
To neutral, 18-36h is bakeed under the conditions of 40-80 DEG C, obtain graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material.
2. a kind of graphene-supported p-n junction Cu according to claim 12O-TiO2The preparation method of heterojunction nanometer material,
It is characterized in that:With graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight, Cu2O、TiO2And oxygen
Graphite accounts for graphene-supported p-n junction Cu respectively2O-TiO240-60%, 30-50%, 5- of heterojunction nanometer material gross weight
15%.
3. a kind of graphene-supported p-n junction Cu according to claim 12O-TiO2The preparation method of heterojunction nanometer material,
It is characterized in that:The graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material is applied to gas sensing field.
4. a kind of graphene-supported p-n junction Cu2O-TiO2The preparation method of heterojunction nanometer material, it is characterised in that the preparation side
Method uses following steps:
1) by mass fraction, 20 parts of deionized waters are taken, 10 parts of graphite oxides are well mixed, and ultrasonic 1h is configured to solution A, takes 20
Part absolute ethyl alcohol, 0.4 part of butyl titanate mixing, stirs 1h, is configured to B solution, takes 20 parts of absolute ethyl alcohols, 0.3 part of Cu (Ac)2·
H2O mixes, and stirs 1h, is configured to C solution;
2) take step 1) obtain B, C solution be slowly added in solution A successively, ultrasonic 25min, stir 3h, obtain mixture;
3) step 2 is taken) mixture that obtains, it is acidified with hydrochloric acid that concentration is 0.3mol/L until pH value is 3, magnetic agitation 3h turns
Enter in the reactor of polytetrafluoroethyllining lining, 10h is incubated under the conditions of 175 DEG C, be then centrifuged for water washing to neutrality, in 60 DEG C of bars
22h is bakeed under part, graphene-supported p-n junction Cu is obtained2O-TiO2Heterojunction nanometer material.
5. a kind of graphene-supported p-n junction Cu according to claim 42O-TiO2The preparation method of heterojunction nanometer material,
It is characterized in that:With graphene-supported p-n junction Cu2O-TiO2On the basis of heterojunction nanometer material gross weight, Cu2O、TiO2And oxygen
Graphite accounts for graphene-supported p-n junction Cu respectively2O-TiO2Heterojunction nanometer material gross weight:45%th, 35%, 10%, it is described
Graphene-supported p-n junction Cu2O-TiO2Heterojunction nanometer material is applied to gas sensing field.
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Cited By (4)
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CN107557810A (en) * | 2017-08-17 | 2018-01-09 | 江西科技学院 | A kind of Z-type hetero-junctions Cu2O_ graphenes _ α Fe2O3Nano-tube array photochemical catalyst and its preparation |
CN108355654A (en) * | 2018-01-18 | 2018-08-03 | 三明学院 | A kind of graphene-based Cu/Cu2O/TiO2Composite visible light catalyst and preparation method thereof |
CN112326735A (en) * | 2020-10-14 | 2021-02-05 | 滕州创感电子科技有限公司 | Preparation method of room-temperature semiconductor gas sensing material and sensor |
CN115364855A (en) * | 2022-07-29 | 2022-11-22 | 淮北师范大学 | Preparation method of cuprous oxide/titanium dioxide/graphene oxide ternary nano compound |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107557810A (en) * | 2017-08-17 | 2018-01-09 | 江西科技学院 | A kind of Z-type hetero-junctions Cu2O_ graphenes _ α Fe2O3Nano-tube array photochemical catalyst and its preparation |
CN108355654A (en) * | 2018-01-18 | 2018-08-03 | 三明学院 | A kind of graphene-based Cu/Cu2O/TiO2Composite visible light catalyst and preparation method thereof |
CN108355654B (en) * | 2018-01-18 | 2021-04-09 | 三明学院 | Graphene-based Cu/Cu2O/TiO2Composite visible light catalyst and preparation method thereof |
CN112326735A (en) * | 2020-10-14 | 2021-02-05 | 滕州创感电子科技有限公司 | Preparation method of room-temperature semiconductor gas sensing material and sensor |
CN115364855A (en) * | 2022-07-29 | 2022-11-22 | 淮北师范大学 | Preparation method of cuprous oxide/titanium dioxide/graphene oxide ternary nano compound |
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